Diagnostics

The errors reported by the board are in the form of audible beeps:

• 1 beep (low pitch): Motor error (see possible causes)
• 2 beeps (low pitch): ADC timeout
• 3 beeps (low pitch): Serial communication timeout
• 4 beeps (low pitch): General timeout (PPM, PWM, Nunchuk)
• 5 beeps (low pitch): Mainboard temperature warning
• 1 beep slow (medium pitch): Low battery voltage < 36V
• 1 beep fast (medium pitch): Low battery voltage < 35V
• 1 beep fast (high pitch): Backward spinning motors

For a more detailed troubleshooting you can use Debug Serial